Has anyone tried using Cortana with the LG Tone Ultra?

I'm on 8.1 GDR1 without Cyan and Cortana can hear me somewhat (there are other issues I hope Cyan will fix) when I use the LG Tone+ headset.
However, when I try the Ultra headset, Cortana can't hear anything at all. I can talk on the phone and record something in OneNote, but Cortana hears nothing.

I was wondering if someone with Cyan had given this a try. With 8.1 Black has many BT issues. I just hope LG didn't break Cortana support completely when they added their Google Now support in the Ultra.

I figured out it's just that the microphone is faulty and doesn't hear loudly enough. It was the same with a 1520 on Cyan that I tried at the store, and I can get Cortana to work by yelling. I'll get it exchanged.